As far as WYSIWYG editors go, CK Editor is awesome, but the default UI icons are chunky and ugly.

I found a thread that offers a rebuild on the default icon set, based on Fugue icons by http://p.yusukekamiyamane.com:

http://cksource.com/forums/viewtopic.php?p=42302#p42302

These are way, way, way sexier. A must have for CK Editor.

See attached screenshot for an example, and icons.png for the replacement icons file.

Note: the attached icons.png replaces icons.png in /ckeditor/skins/kama/ if you are using kama as the default skin. Should be a simple drag and drop, but make a backup!

CKEditor has an advanced feature that forces all pastes as plain text. This removes everything but I much prefer that than having a site that is broken. It doesn't take that long to make a couple of headings, links and a list with a small wysiwyg editor